085  
CDUS43 KLOT 112138  
CLICHI  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
432 PM CDT SUN MAY 11 2008  
 
...................................    
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 11 2008  
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1971 TO 2000  
CLIMATE RECORD PERIOD 1871 TO 2008  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................  
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 58 259 PM 89 1982 68 -10 70  
MINIMUM 46 726 AM 33 1981 46 0 51  
AVERAGE 52 57 -5 61  
 
PRECIPITATION (IN)  
TODAY 0.95 3.30 1966 0.11 0.84 0.00  
MONTH TO DATE 2.99 1.22 1.77 0.13  
SINCE MAR 1 8.34 7.55 0.79 7.28  
SINCE JAN 1 13.80 10.93 2.87 10.61  
 
SNOWFALL (IN)  
TODAY 0.0 0.2 1966 0.0 0.0 0.0  
MONTH TO DATE 0.0 T 0.0 0.0  
SINCE MAR 1 7.9 7.6 0.3 5.3  
SINCE JUL 1 60.3 38.0 22.3 35.6  
 
DEGREE DAYS  
HEATING  
TODAY 13 9 4 4  
MONTH TO DATE 98 113 -15 45  
SINCE MAR 1 1485 1484 1 1285  
SINCE JUL 1 6176 6330 -154 5967  
 
COOLING  
TODAY 0 1 -1 0  
MONTH TO DATE 0 11 -11 14  
SINCE MAR 1 0 21 -21 23  
SINCE JAN 1 0 21 -21 23    
..............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION N (10)  
HIGHEST GUST SPEED 41 HIGHEST GUST DIRECTION N (20)  
AVERAGE WIND SPEED 19.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 500 AM  
LOWEST 57 300 PM  
AVERAGE 72  
..........................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 92 1956  
MINIMUM TEMPERATURE (F) 46 31 1981  
 
SUNRISE AND SUNSET  
MAY 11 2008...........SUNRISE 535 AM CDT SUNSET 802 PM CDT  
MAY 12 2008...........SUNRISE 534 AM CDT SUNSET 803 PM CDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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